Welcome to Masonbox.com – Mailing Boxes & Shipping Supplies
Mason Box’s on-line store for all your MailMaster mailing boxes, universal sealing flap boxes, utility boxes, shipping supplies and medical/lab boxes.
Masonbox.com is the internet “superstore” for all of your mailing & shipping needs. We have everything you need for all of your mailing and shipping supplies.
Masonbox.com is your complete source for all your mailing box needs. We stock several styles of mailing boxes including the MailMaster mailing box, Universal Sealing Flap Box, Extra-Strength Utility Box and the Econochip Utility Box.
MailMaster Mailing Box: Features rounded reusable wire fasteners, and is ideal for Parcel Post, UPS, & Federal Express. No taping is required.
Universal Sealing Flap Box: Features four sealing flaps on the bottom for secure mailing. Eliminates wrapping, tying and taping. Tamper evident protection and meet U.S. Postal Service regulations for Registered Mail.
Extra-Strength Utility Boxes: Sturdy .044 gauge cardboard for extra strength and rigidity. Telescoping two-piece construction with thumb cuts for easy opening.
Econochip Utility Boxes: Ideal for storage or inner shipping cartons. Made with super-strength cardboard and reinforced-taped corners
Bubble Bags: Self-sealing pouches for extra security
Jiffy Padded Shipping Bags: Ideal for shipping or storing repair parts, tools, books and more. Moisture-resistant exterior with built-in tear tape for easy opening.
Jiffylite Bubble Cushioned mailers: Recycled paper fiber with 3/16” thick barrier bubbles. Light weight, reusable mailers have puncture-resistant kraft exterior, with self-sealing adhesive strip that peels and seals.
Econokraft Corrugated Shipping Cartons: Strong 200 lb. test kraft corrugated boxes for shipping and storage. Made from recycled materials, and meets all applicable freight classifications and government specifications.
Reclosable Poly Bags: Minigrip 2 mil re-closable polyethylene bags. Dust, spill and moisture proof.
Medical Vial Mailing Boxes: Specially designed for safe secure transit of standard size medical vials.
Paraffin Block Storage Boxes: Sturdy low-cost corrugated construction protects tissue blocks and organizes specimens.